Multisensor fusion for on line monitoring of the quality of spot welding in automotive industry

Measurement ◽  
2008 ◽  
Vol 41 (4) ◽  
pp. 412-423 ◽  
Author(s):  
J.D. Cullen ◽  
N. Athi ◽  
M. Al-Jader ◽  
P. Johnson ◽  
A.I. Al-Shamma’a ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Spot Welding ◽  
Multisensor Fusion ◽  
On Line

scholarly journals On-Line Spot Welding Quality Prediction with Analysis of Welding Parameters

2020 ◽  
Vol 3 (1) ◽  
pp. 127-140
Author(s):  
Emin Cantez ◽  
İsmail Atalay ◽  
Oğuz Alper İsen ◽  
Serkan Aydın
Keyword(s):  
Machine Learning ◽  
Automotive Industry ◽  
Spot Welding ◽  
Welding Parameters ◽  
Quality Prediction ◽  
Welding Quality ◽  
Important Place ◽  
Machine Learning Methods ◽  
On Line

Spot welding is one of the metal joining technologies and has an important place especially in the automotive industry. A passenger car has average 5000 spots. Destructive inspection is carried out at certain periods to check these spots. However, not all parts can be checked. In this work, welding parameters were collected and analyzed. By applying different machine learning methods, the quality of the spot welding was tried to be estimated and the results were compared.

Welding sequence optimisation in the automotive industry: A review

2019 ◽  
Vol 233 (17) ◽  
pp. 5945-5952
Author(s):  
Varshan Beik ◽  
Hormoz Marzbani ◽  
Reza Jazar
Keyword(s):  
Automotive Industry ◽  
Spot Welding ◽  
Fast Rate ◽  
Welding Process ◽  
Future Research ◽  
Automotive Body ◽  
Welding Sequence ◽  
Common Technique ◽  
The Common

Spot welding is the most common technique used to join sheet metals in the automotive industry due to the fast rate of production. Optimising the welding process including the sequence, number and location of the welds would significantly improve the quality of the final product and production cost. This paper presents an overview on the available methods to plan and optimise various aspects of the welding process including welding sequence, weld quantity and location. Firstly, the welding concept in the automotive industry is briefly reviewed. Secondly, the welding process optimisation with emphasis on the welding sequence is discussed. The common gaps and challenges are identified and, lastly, future research to plan and optimise the welding sequence in the automotive body is outlined.

scholarly journals Análisis de la resistencia de piezas soldadas por el proceso de resistencia eléctrica

2020 ◽  
pp. 1-9
Author(s):  
José Antonio Medina-Mendoza ◽  
Gerardo Méndez-Macías ◽  
Naieli Herrera-Reyes
Keyword(s):  
Automotive Industry ◽  
Electrical Resistance ◽  
Spot Welding ◽  
International System ◽  
Stress Test ◽  
Welding Process ◽  
Hydraulic Press ◽  
Metal Parts ◽  
Automotive Parts

A stay has been carried out in a metalworking company located in the Valle de Aguascalientes Industrial Park, in order to carry out a study that can reflect the state of manufacture of various metal parts that involve an electrical resistance welding process. The manufacturing area is called Automotive and has 5 welding machines of various brands and capacities in which different models of automotive parts are manufactured for various clients of the automotive industry in Aguascalientes Mexico. The study focuses on the review of the process based on the regulations that are handled in the company and that are the JIS B 1196 referring to spot welding, from which two main characteristics are extracted to guarantee the quality of the product and that are the resistance to weld stress and torsional strength. The manufacturing standards used determine that every hour a stress test must be carried out on the different manufactured parts according to their classification, welding is tested on 6M, 8M and 10M nuts of the international system applying loads in a brand FORSE DX-2.5 model hydraulic press and one hundred percent tests torque on parts with 6M nuts welded, which are tested in a devise of our own design. The data taken for the evaluation were obtained in the company's metrology laboratory and showed a very marked dispersion, although said data apparently did not exceed the established limits. A review and evaluation of the process was carried out and limits and improvements were proposed that guarantee good quality of the products. Some practices that can affect quality were found, they are described and a solution is proposed to prevent them from being carried out in the process.

Automatic buffer capacity based sensor for effluent quality monitoring

1996 ◽  
Vol 33 (1) ◽  
pp. 81-87
Author(s):  
L. Van Vooren ◽  
P. Willems ◽  
J. P. Ottoy ◽  
G. C. Vansteenkiste ◽  
W. Verstraete
Keyword(s):  
Wastewater Treatment ◽  
Buffer Capacity ◽  
Wastewater Treatment Plants ◽  
Data Interpretation ◽  
Full Scale ◽  
Quality Monitoring ◽  
Effluent Quality ◽  
Capacity Curves ◽  
On Line

The use of an automatic on-line titration unit for monitoring the effluent quality of wastewater plants is presented. Buffer capacity curves of different effluent types were studied and validation results are presented for both domestic and industrial full-scale wastewater treatment plants. Ammonium and ortho-phosphate monitoring of the effluent were established by using a simple titration device, connected to a data-interpretation unit. The use of this sensor as the activator of an effluent quality proportional sampler is discussed.

Analysis of Electromagnetic Inverse Model of Resistance Spot Welding

2010 ◽  
Vol 160-162 ◽  
pp. 974-979
Author(s):  
Nai Feng Fan ◽  
Zhen Luo ◽  
Yang Li ◽  
Wen Bo Xuan
Keyword(s):  
Resistance Spot Welding ◽  
Regularization Method ◽  
Spot Welding ◽  
Influence Factors ◽  
Great Influence ◽  
Welding Process ◽  
Inverse Model ◽  
Resistance Spot ◽  
Inversion Theory

Resistance spot welding (RSW) is an important welding process in modern industrial production, and the quality of welding nugget determines the strength of products to a large extent. Limited by the level of RSW quality monitor, however, RSW has rarely been applied to the fields with high welding quality requirements. Associated with the inversion theory, in this paper, an electromagnetic inverse model of RSW was established, and the analysis of influence factors, such as the layout of the probes, the discrete program and the regularization method, was implemented as well. The result shows that the layout of the probe and the regularization method has great influence on the model. When the probe is located at the y direction of x-axis or the x direction of y-axis and Conjugate Gradient method is selected, a much better outcome can be achieved.

scholarly journals Optimum three-point linkage set up for improving the quality of soil spectra and the accuracy of soil phosphorus measured using an on-line visible and near infrared sensor

2009 ◽  
Vol 103 (1) ◽  
pp. 144-152 ◽  
Author(s):  
A.M. Mouazen ◽  
M.R. Maleki ◽  
L. Cockx ◽  
M. Van Meirvenne ◽  
L.H.J. Van Holm ◽  
...  
Keyword(s):  
Near Infrared ◽  
Soil Phosphorus ◽  
Infrared Sensor ◽  
On Line ◽  
Set Up

Resistance spot welding of additively manufactured maraging steels Part II: Failure behavior

2021 ◽  
pp. 1-31
Author(s):  
Cheng Luo ◽  
Yansong Zhang ◽  
Michael Oelscher ◽  
Yandong Shi ◽  
Niels Pasligh ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Fracture Mode ◽  
Automotive Industry ◽  
Material Properties ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Melting Process ◽  
Spot Welds ◽  
Laser Melting ◽  
Maraging Steels

Abstract Application of maraging steels via selective laser melting process in the automotive industry was unavoidably involved in the resistance spot welding with conventional steels. Due to the rapid cooling rate of welding process, selective laser melted maraging steels with unique chemical components and stack microstructure could induced the different microstructural evolution, resulting in the complicated fracture behavior in the spot welds. This paper developed a FEA model to predict the fracture mode of spot welds of DP600 to maraging steel and the effect of test conditions and printing orientations were studied. A method was proposed to calculate the material properties of fusion zone by introducing the combined effect of melting DP600 and maraging steels via selective laser melting, resulting in the accurate prediction of fracture mode and strength of spot welds. An interlayer with lower strength was found around the fusion zone and the fracture path propagated in the region, resulting in the partial interfacial failure of spot welds. Meanwhile, the printing orientation had no significant effect on the fracture mode and strength of spot welds, but the different material properties of maraging steels could affect the fracture displacement of spot welds. These findings could pave a way to guide the application of maraging steels via selective laser melting process in multiple industries, especially in the automotive industry.

scholarly journals Quality of life and welfare of nursing university students: integrative review / Qualidade de vida e bem-estar dos estudantes universitários de enfermagem: revisão integrativa / Calidad de vida y bienestar de los estudiantes de enfermería...

2017 ◽  
Vol 6 (3) ◽  
pp. 72
Author(s):  
Márcia Teles De Oliveira Gouveia ◽  
Hidelkarla Sales De Santana ◽  
Ana Maria Ribeiro Dos Santos ◽  
Girlene Ribeiro Da Costa ◽  
Márcia Astrês Fernandes
Keyword(s):  
Quality Of Life ◽  
University Students ◽  
Allied Health ◽  
Medical Literature ◽  
Integrative Review ◽  
Literature Analysis ◽  
Cumulative Index ◽  
Calidad De Vida ◽  
On Line

Objetivo: realizar busca de publicações científicas nas bases de dados sobre a qualidade de vida e o bem-estar do estudante universitário de enfermagem; descrever e analisar as perspectivas enfocadas na literatura. Metodologia: Revisão Integrativa da Literatura. Foram selecionados vinte e três estudos publicados entre 2010 e 2014, nas bases de dados Literatura Latino Americana e do Caribe de Informação em Ciências da Saúde, Medical Literature Analysis and Retrieval Sistem on-line e o Cumulative Index to Nursing and Allied Health Literature nos idiomas português, inglês e espanhol. Resultados: Observou-se que a qualidade de vida e o bem-estar encontram-se moderadamente bem na avaliação dos estudantes de enfermagem avaliados nos estudos, e que apesar dos estressores decorrentes do curso, os estudantes resolvem as situações estressantes com algumas técnicas de relaxamento e enfrentamento, mas também recorrendo ao uso de álcool e fumo. Os instrumentos utilizados nos estudos: WHOQOL-BREF, Inventário de Depressão de Beck e a Escala de Estresse Percebido. Conclusão: identificadas depressão, insônia, estresse e cansaço, decorrentes da vida acadêmica. Desse modo, importante às instituições e docentes estarem atentos para reconhecer precocemente os indicativos multidimensionais que afetam a qualidade de vida e o bem-estar dos seus estudantes, e implementar medidas preventivas.

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